1.

Conference Proceedings
Conference Proceedings
1. Nondestructive measurement of layer thickness in double heterostructures x ray by double crystal diffraction
Qu,Y. ; Li,X. ; Song,X. ; Zhang,X. ; Wang,L. ; Qie,X.
Pub. info.: Third International Conference on Thin Film Physics and Applications : 15-17 April 1997, Shanghai, China.  pp.378-380,  1998.  Bellingham, Wash..  SPIE-The International Society for Optical Engineering
Title of ser.: Proceedings of SPIE - the International Society for Optical Engineering
Ser. no.: 3175
2.

Conference Proceedings
Conference Proceedings
2. Improving high-speed flat lapping machine with NC
Yang,J. ; Song,J. ; Li,X. ; Wang,L.
Pub. info.: Current developments in optical elements and manufacturing : 16-18 September 1998, Beijing, China.  pp.229-233,  1998.  Bellingham, Wash., USA.  SPIE-The International Society for Optical Engineering
Title of ser.: Proceedings of SPIE - the International Society for Optical Engineering
Ser. no.: 3557